Quality Research in Literacy and Science Education: International Perspectives and Gold Standards - Couverture souple

Couverture souple

ISBN 10 : 9048178770 ISBN 13 : 9789048178773

Editeur : Springer, 2010

Synopsis

Statistical models attempt to describe and quantify relationships between variables. In the models presented in this chapter, there is a response variable (sometimes called dependent variable) and at least one predictor variable (sometimes called independent or explanatory variable). When investigating a possible cause-and-effect type of relationship, the response variable is the putative effect and the predictors are the hypothesized causes. Typically, there is a main predictor variable of interest; other predictors in the model are called covariates. Unknown covariates or other independent variables not controlled in an experiment or analysis can affect the dependent or outcome variable and mislead the conclusions made from the inquiry (Bock, Velleman, & De Veaux, 2009). A p value (p) measures the statistical significance of the observed relationship; given the model, p is the probability that a relationship is seen by mere chance. The smaller the p value, the more confident we can be that the pattern seen in the data 2 is not random. In the type of models examined here, the R measures the prop- tion of the variation in the response variable that is explained by the predictors 2 specified in the model; if R is close to 1, then almost all the variation in the response variable has been explained. This measure is also known as the multiple correlation coefficient. Statistical studies can be grouped into two types: experimental and observational.

A propos du livre

Présentation de l'éditeur

This interdisciplinary text analyzes modern applications of research methods in education, focusing on science and literacy. It demonstrates how the results of research can be applied to produce better teachers and better-educated students.

Détails de l'édition

• Éditeur: Springer
• Date d'édition: 2010
• Langue: anglais
• ISBN 10: 9048178770
• ISBN 13: 9789048178773
• Reliure: Broché
• Numéro d'édition: 1
• Nombre de pages: 696
• Éditeur: Shelley Mack C., Yore Larry D., Hand Brian B.
• Coordonnées du fabricant: Springer Nature Customer Service Center GmbH; ProductSafety@springernature.com; ; Europaplatz 3,69115 Heidelberg, Germany; Heidelberg; 69115; Allemagne